She didn’t invent anything. The supercapacitor has been developing for 10 years.
If not longer. Here is just one example out of tens of thousands of supercaps that are available at Digikey and every other distributor.
I remember that first proposals to use supercaps as a battery replacement started at least 10 years ago. Not many are in use today. They have issues. For example, batteries tend to produce more or less stable voltage until they reach a certain discharge level. Capacitors don't do that, so you have to have wide input range switching regulators - and their range has to be wider than for Li-Ion batteries because if you want to take all the energy then you have to take voltages all the way down to zero.
Correct and an LED requires very little current to operate. Sounds like she hasn’t invented anything new but may have found a way to apply current technology to meet a need. We’ll see...